. >> many vietnam vets tell us they come here every year as a chance to see each other and a chance to remember absent friends on this special day. live in northwest washington, richard lee. >> president obama paid tribute to the nation's veterans at arlington national cemetery this morning. the president laid a wreath at the tomb of the unknown soldiers. after the ceremony not only did the president pray the sacrifices of american service men and women and their families, he also talked about taking care of those vets who suffer from post-traumatic stress disorder. >> no veteran should have to wait months or years for the benefits that you've earned, so we will continue to attack the claims backlog. we won't let up. >> president obama also said no hug or handshake is enough to truly honor those who serve and that more must be done to express our gratitude every day. >> and earlier today people gathered at the world war ii memorial to pay tribute to those who served during america's greatest conflict. i was honored to be a part of today's ceremony honoring not only america's greatest g